<?php

class dbstuff {
	
	var $version = '';
	var $querynum = 0;
	var $link;

	function connect($dbhost , $dbuser , $dbpw , $dbname = '' , $pconnect = 0 , $halt = TRUE) {

		$func = empty ( $pconnect ) ? 'mysql_connect' : 'mysql_pconnect';
		if (! $this->link = @$func ( $dbhost, $dbuser, $dbpw )) {
			$halt && $this->halt ( 'Can not connect to MySQL server' );
		}
		else {
			if ($this->version () > '4.1') {
				global $charset, $dbcharset;
				$dbcharset = ! $dbcharset && in_array ( strtolower ( $charset ), array ( 
					'gbk' , 'big5' , 'utf-8' 
				) ) ? str_replace ( '-', '', $charset ) : $dbcharset;
				$serverset = $dbcharset ? 'character_set_connection=' . $dbcharset . ', character_set_results=' . $dbcharset . ', character_set_client=binary' : '';
				$serverset .= $this->version () > '5.0.1' ? ((empty ( $serverset ) ? '' : ',') . 'sql_mode=\'\'') : '';
				$serverset && mysql_query ( "SET $serverset", $this->link );
			}
			$dbname && @mysql_select_db ( $dbname, $this->link );
		}
	
	}

	function select_db($dbname) {

		return mysql_select_db ( $dbname, $this->link );
	}

	function fetch_array($query , $result_type = MYSQL_ASSOC) {

		return mysql_fetch_array ( $query, $result_type );
	}

	function fetch_first($sql) {

		return $this->fetch_array ( $this->query ( $sql ) );
	}

	function result_first($sql) {

		return $this->result ( $this->query ( $sql ), 0 );
	}

	function query($sql , $type = '') {

		global $debug, $discuz_starttime, $sqldebug, $sqlspenttimes;
		
		$func = $type == 'UNBUFFERED' && @function_exists ( 'mysql_unbuffered_query' ) ? 'mysql_unbuffered_query' : 'mysql_query';
		if (! ($query = $func ( $sql, $this->link ))) {
			if (in_array ( $this->errno (), array ( 
				2006 , 2013 
			) ) && substr ( $type, 0, 5 ) != 'RETRY') {
				$this->close ();
				require './config.inc.php';
				$this->connect ( $dbhost, $dbuser, $dbpw, $dbname, $pconnect );
				$this->query ( $sql, 'RETRY' . $type );
			}
			elseif ($type != 'SILENT' && substr ( $type, 5 ) != 'SILENT') {
				$this->halt ( 'MySQL Query Error', $sql );
			}
		}
		
		$this->querynum ++;
		return $query;
	}

	function affected_rows() {

		return mysql_affected_rows ( $this->link );
	}

	function error() {

		return (($this->link) ? mysql_error ( $this->link ) : mysql_error ());
	}

	function errno() {

		return intval ( ($this->link) ? mysql_errno ( $this->link ) : mysql_errno () );
	}

	function result($query , $row) {

		$query = @mysql_result ( $query, $row );
		return $query;
	}

	function num_rows($query) {

		$query = mysql_num_rows ( $query );
		return $query;
	}

	function num_fields($query) {

		return mysql_num_fields ( $query );
	}

	function free_result($query) {

		return mysql_free_result ( $query );
	}

	function insert_id() {

		return ($id = mysql_insert_id ( $this->link )) >= 0 ? $id : $this->result ( $this->query ( "SELECT last_insert_id()" ), 0 );
	}

	function fetch_row($query) {

		$query = mysql_fetch_row ( $query );
		return $query;
	}

	function fetch_fields($query) {

		return mysql_fetch_field ( $query );
	}

	function version() {

		if (empty ( $this->version )) {
			$this->version = mysql_get_server_info ( $this->link );
		}
		return $this->version;
	}

	function close() {

		return mysql_close ( $this->link );
	}

	function halt($message = '' , $sql = '') {

		echo 'SQL Error:<br />' . $message . '<br />' . $sql;
	}
}

?>